Home / 19,981.48-29,987.24-7,513.80

Finding the Fourth Proportional to 19,981.48, 29,987.24 and 7,513.80

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Solution

The fourth proportional to 19,981.48, 29,987.24 and 7,513.80 is: 11,276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.48 : 29,987.24 = 7,513.80 : x
  2. Step 2: Convert to fraction form
    19,981.48/29,987.24 = 7,513.80/x
  3. Step 3: Cross multiply
    19,981.48x = 29,987.24 × 7,513.80
  4. Step 4: Simplify right side
    19,981.48x = 225,318,123.91
  5. Step 5: Solve for x
    x = 225,318,123.91/19,981.48
  6. Step 6: Final answer
    x = 11,276.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.